Files
nick-doc/Issues/ISSUE-054-login-rate-limiter-counts-all-attempts-not-only-failures.md
Siavash Sameni dceaf82934 audit: 2026-05-30 full-codebase audit — report, issues, docs, runbooks
Full-codebase-audit 2026-05-30 outputs:
- Audit report: 09 - Audits/Full Codebase Audit - 2026-05-30.md
- 81 issue files ISSUE-055..135 (decisions + 1 skipped no-brainer).
- Scanner docs from scratch (was zero): architecture, data model, API ref, payment
  flow, operations runbook + repo README.
- Doc-sync updates across API reference, data models, flows, design system.
- Secret Rotation Runbook (08 - Operations) for the exposed credentials.
- Reusable workflow guide (07 - Development) + .claude/workflows/full-codebase-audit.js.

Issues remain status:open intentionally — the code fixes are uncommitted-then-committed
working-tree changes per repo and aren't "resolved" until merged/deployed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-05-30 18:48:04 +04:00

41 lines
1.7 KiB
Markdown

---
issue: 054
title: "Login rate limiter counts all attempts (not just failures) — users locked out after correct logins"
severity: major
domain: Authentication
status: resolved
resolved: 2026-05-29
fix: "Split checkLoginAttempts into read-only check and new incrementFailedLoginAttempt. authController now only calls increment on failed login paths, not on all attempts."
labels: [backend, bug]
status: open
created: 2026-05-29
source: Doc vs Code Audit 2026-05-29
---
# 🟠 Login rate limiter counts all attempts (not just failures) — users locked out after correct logins
**Severity:** major
**Domain:** Authentication
**Labels:** backend, bug
## Description
`rateLimitService.checkLoginAttempts()` calls `checkLimit()``redisService.incr`, incrementing the counter on **every** login invocation, before password comparison. The counter only resets after a fully successful login. So 5 total attempts within 15 min (any mix of correct/incorrect passwords) triggers the lockout — not 5 failures as the docs imply.
## Current Behavior
5 total login attempts within 15 minutes → `429 TOO_MANY_ATTEMPTS`, even if some attempts used the correct password.
## Expected Behavior
The counter should increment only on a **failed** password comparison, not on every attempt. Otherwise document the actual behaviour so UX warns users appropriately.
## Affected Files
- `backend/src/services/auth/rateLimitService.ts``checkLoginAttempts` / `checkLimit`
- `backend/src/controllers/authController.ts` — move the increment to after password comparison
## References
- [Doc vs Code Audit Report](../09%20-%20Audits/Doc%20vs%20Code%20Audit%20Report%20-%202026-05-29.md) — Finding M3